<template>
  <div :class="prefixCls" :style="{ width: containerWidth }">
    <ImgUpload
      :fullscreen="fullscreen"
      @uploading="handleImageUploading"
      @done="handleDone"
      v-if="showImageUpload"
      v-show="editorRef"
      :disabled="disabled"
    />
    <textarea
      :id="tinymceId"
      ref="elRef"
      :style="{ visibility: 'hidden' }"
      v-if="!initOptions.inline"
    ></textarea>
    <slot v-else></slot>
  </div>
</template>

<script lang="ts">
import type { Editor, RawEditorSettings } from "tinymce";
import tinymce from "tinymce/tinymce";
import "tinymce/themes/silver";
import "tinymce/icons/default/icons";
import "tinymce/plugins/advlist";
import "tinymce/plugins/anchor";
import "tinymce/plugins/autolink";
import "tinymce/plugins/autosave";
import "tinymce/plugins/code";
import "tinymce/plugins/codesample";
import "tinymce/plugins/directionality";
import "tinymce/plugins/fullscreen";
import "tinymce/plugins/hr";
import "tinymce/plugins/insertdatetime";
import "tinymce/plugins/link";
import "tinymce/plugins/lists";
import "tinymce/plugins/media";
import "tinymce/plugins/nonbreaking";
import "tinymce/plugins/noneditable";
import "tinymce/plugins/pagebreak";
import "tinymce/plugins/paste";
import "tinymce/plugins/preview";
import "tinymce/plugins/print";
import "tinymce/plugins/save";
import "tinymce/plugins/searchreplace";
import "tinymce/plugins/spellchecker";
import "tinymce/plugins/tabfocus";
// import 'tinymce/plugins/table';
import "tinymce/plugins/template";
import "tinymce/plugins/textpattern";
import "tinymce/plugins/visualblocks";
import "tinymce/plugins/visualchars";
import "tinymce/plugins/wordcount";

import {
  defineComponent,
  computed,
  nextTick,
  ref,
  unref,
  watch,
  onDeactivated,
  onBeforeUnmount,
} from "vue";
import ImgUpload from "./ImgUpload.vue";
import { toolbar, plugins } from "./tinymce";
import { buildShortUUID } from "$/utils/uuid";
import { bindHandlers } from "./helper";
import { onMountedOrActivated } from "$/hooks/core/onMountedOrActivated";
import { useDesign } from "$/hooks/web/useDesign";
import { isNumber } from "$/utils/is";

const tinymceProps = {
  options: {
    type: Object as PropType<Partial<RawEditorSettings>>,
    default: {},
  },
  value: {
    type: String,
  },

  toolbar: {
    type: Array as PropType<string[]>,
    default: toolbar,
  },
  plugins: {
    type: Array as PropType<string[]>,
    default: plugins,
  },
  modelValue: {
    type: String,
  },
  height: {
    type: [Number, String] as PropType<string | number>,
    required: false,
    default: 400,
  },
  width: {
    type: [Number, String] as PropType<string | number>,
    required: false,
    default: "auto",
  },
  showImageUpload: {
    type: Boolean,
    default: true,
  },
  darkMode: {
    type: String,
    default: "oxide",
  },
};

export default defineComponent({
  name: "Tinymce",
  components: { ImgUpload },
  inheritAttrs: false,
  props: tinymceProps,
  emits: ["change", "update:modelValue", "inited", "init-error"],
  setup(props, { emit, attrs }) {
    const editorRef = ref<Nullable<Editor>>(null);
    const fullscreen = ref(false);
    const tinymceId = ref<string>(buildShortUUID("tiny-vue"));
    const elRef = ref<Nullable<HTMLElement>>(null);

    const { prefixCls } = useDesign("tinymce-container");

    const tinymceContent = computed(() => props.modelValue);

    const containerWidth = computed(() => {
      const width = props.width;
      if (isNumber(width)) {
        return `${width}px`;
      }
      return width;
    });

    const skinName = computed(() => {
      return props.darkMode === "light" ? "oxide" : "oxide-dark";
    });

    const initOptions = computed((): RawEditorSettings => {
      const { height, options, toolbar, plugins } = props;
      const publicPath = import.meta.env.VITE_PUBLIC_PATH || "/";
      return {
        selector: `#${unref(tinymceId)}`,
        height,
        toolbar,
        menubar: "file edit insert view format table",
        plugins,
        language_url: publicPath + "resource/tinymce/langs/zh_CN.js",
        language: "zh_CN",
        branding: false,
        default_link_target: "_blank",
        link_title: false,
        object_resizing: false,
        auto_focus: true,
        skin: skinName.value,
        skin_url: publicPath + "resource/tinymce/skins/ui/" + skinName.value,
        content_css:
          publicPath +
          "resource/tinymce/skins/ui/" +
          skinName.value +
          "/content.min.css",
        ...options,
        setup: (editor: Editor) => {
          editorRef.value = editor;
          editor.on("init", (e) => initSetup(e));
        },
      };
    });

    const disabled = computed(() => {
      const { options } = props;
      const getdDisabled = options && Reflect.get(options, "readonly");
      const editor = unref(editorRef);
      if (editor) {
        editor.setMode(getdDisabled ? "readonly" : "design");
      }
      return getdDisabled ?? false;
    });

    watch(
      () => attrs.disabled,
      () => {
        const editor = unref(editorRef);
        if (!editor) {
          return;
        }
        editor.setMode(attrs.disabled ? "readonly" : "design");
      }
    );

    onMountedOrActivated(() => {
      if (!initOptions.value.inline) {
        tinymceId.value = buildShortUUID("tiny-vue");
      }
      nextTick(() => {
        setTimeout(() => {
          initEditor();
        }, 30);
      });
    });

    onBeforeUnmount(() => {
      destory();
    });

    onDeactivated(() => {
      destory();
    });

    function destory() {
      if (tinymce !== null) {
        tinymce?.remove?.(unref(initOptions).selector!);
      }
    }

    function initEditor() {
      const el = unref(elRef);
      if (el) {
        el.style.visibility = "";
      }
      tinymce
        .init(unref(initOptions))
        .then((editor) => {
          emit("inited", editor);
        })
        .catch((err) => {
          emit("init-error", err);
        });
    }

    function initSetup(e) {
      const editor = unref(editorRef);
      if (!editor) {
        return;
      }
      const value = props.modelValue || "";

      editor.setContent(value);
      bindModelHandlers(editor);
      bindHandlers(e, attrs, unref(editorRef));
    }

    function setValue(editor: Recordable, val: string, prevVal?: string) {
      if (
        editor &&
        typeof val === "string" &&
        val !== prevVal &&
        val !== editor.getContent({ format: attrs.outputFormat })
      ) {
        editor.setContent(val);
      }
    }

    function bindModelHandlers(editor: any) {
      const modelEvents = attrs.modelEvents ? attrs.modelEvents : null;
      const normalizedEvents = Array.isArray(modelEvents)
        ? modelEvents.join(" ")
        : modelEvents;

      watch(
        () => props.modelValue,
        (val: string, prevVal: string) => {
          setValue(editor, val, prevVal);
        }
      );

      watch(
        () => props.value,
        (val: string, prevVal: string) => {
          setValue(editor, val, prevVal);
        },
        {
          immediate: true,
        }
      );

      editor.on(
        normalizedEvents ? normalizedEvents : "change keyup undo redo",
        () => {
          const content = editor.getContent({ format: attrs.outputFormat });
          emit("update:modelValue", content);
          emit("change", content);
        }
      );

      editor.on("FullscreenStateChanged", (e) => {
        fullscreen.value = e.state;
      });
    }

    function handleImageUploading(name: string) {
      const editor = unref(editorRef);
      if (!editor) {
        return;
      }
      editor.execCommand("mceInsertContent", false, getUploadingImgName(name));
      const content = editor?.getContent() ?? "";
      setValue(editor, content);
    }

    function handleDone(name: string, url: string) {
      const editor = unref(editorRef);
      if (!editor) {
        return;
      }
      const content = editor?.getContent() ?? "";
      const val =
        content?.replace(getUploadingImgName(name), `<img src="${url}"/>`) ??
        "";
      setValue(editor, val);
    }

    function getUploadingImgName(name: string) {
      return `[uploading:${name}]`;
    }

    return {
      prefixCls,
      containerWidth,
      initOptions,
      tinymceContent,
      elRef,
      tinymceId,
      handleImageUploading,
      handleDone,
      editorRef,
      fullscreen,
      disabled,
    };
  },
});
</script>
<style lang="less">
@prefix-cls: ~"vben-tinymce-container";

.@{prefix-cls} {
  position: relative;
  line-height: normal;

  textarea {
    z-index: -1;
    visibility: hidden;
  }
}
</style>
